[camoweasel]

According to my searches and from my own first hand experience, the speedometer is off by about 2-3 miles per hour around 60mph. Theoretically if the speedometer is that far off, wouldn't my odometer be off too? Just for my own confirmation I used my own GPS to see if indeed it was and discovered something alarming? Even though the speedometer is off, the odometer seems to be spot on? Truthfully, I'm not worried about my speedometer being off but more worried that my odometer was giving a false reading. Since I decided to sign up for Fuelly, I wanted to make sure I was posting accurate readings. Is it possible for the speedometer to be off but the odometer be pretty accurate?

 

[Joe333x]

Its definitely possible, lots of manufacturers retard the speedo to prevent people from speeding. Wasnt sure about cars but i know most sport bikes are off and you can by a plug and play adapter to make it read correct if you really care that much. I cant imagine that the speedo would have an effect on the odo though, then you have a class action lawsuit on your hands since your vehicle would then depreciate faster.

 

[TexasScout]

Yes, it will. I have compared my odo to my GPS and it's about 1-1.5% fast. That's because they use the same gear in the the Pro 4X as in all the trucks. The Pro has 275 tires and the standard trucks have 265 tires. The speed/odo is only "correct" in the Pro 4X models.

 

[bob-w]

2008 le came with 265-65-17 I have checked at least once a year and speedo and odometer are right on evry time !

 

[FFTR]

- I don't have a frontier yet, but can't the Nissan dealership service tap into the computer and program in what size tires is on the vehicle. That should correct the od.

 

[2013Pro4X]

At 60mph on my p4x with stock tires, the speedometer needle is dead on with my gps, however my vehicle speed reported through the OBDII port is 57.5mph. I have never verified how accurate the odometer is.

 

[camoweasel]

I know that my speedo is definitely off which I can live with. When I measured the distance with my GPS I noticed that when my odometer hit 0.5 miles the GPS indicated 1 mile traveled. At first I though, oh great but then noticed at every 0.5, 1.5, 2.5, 3.5, 4.5, 5.5 etc my odometer read, the GPS went up one more mile traveled so I'm assuming as long as both increase at the same point every time, the odometer is calibrated correctly. As long as my odometer is accurate I am happy. I am just worried that if my speedo is off that would throw off my odometer too.

 

[jebova2301]

My speedometer is off by about 3mph. That said, the odometer is always dead on when I check it.

Here is the interesting thing. The signal coming from the OBD2 port gives me the speed that is about 3mph slower than what the dash shows. The speed from the OBD2 readout is always dead on with my gps.